I have exactly the same issue right now. Did you ever get yours resolved? If so what did you do?
thanks
This just started happening.
What model Roku do you have and how old is it?
Have you tried a system restart? Or unplug it for 30 to 60 seconds?
Have you checked your HDMI cable to make sure they are secure?
Or tried switching to a different HDMI cable or HDMI port?